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(hooked on) Phonex

Built at OpenAI Voice Hack Night · May 27, 2026 · San Francisco, CA

(hooked on) Phonex — Demo video

My 3-year old has shown interest in learning how to read, but all of the phonics-based apps we've tried are cumbersome, rigid, and require an adult to use effectively. So I built Phonex, an app to help 3-7 year-olds learn how to read. It was build for the hackathon entirely with Codex and uses a combination of OpenAI's Realtime API, speech-to-text (for "grading" phonemes), and text-to-speech (for generating phonemes/words), plus a formal state machine to control and track progress. Github repo: https://github.com/jumploops/phonex

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